A317732 Number of nX7 0..1 arrays with every element unequal to 1, 2, 3, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

8, 5824, 554642, 67837952, 8216055128, 990049380944, 119470846769818, 14414412169370696, 1739115942914291910, 209827866262682657184, 25316123747615739958168, 3054437828693771208355664

Offset

1,1

Comments

Column 7 of A317733.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

R. H. Hardin, Empirical recurrence of order 81

Formula

Empirical recurrence of order 81 (see link above)

Example

Some solutions for n=5
..0..0..0..0..1..1..0. .0..0..0..0..0..0..0. .0..0..0..0..0..1..0
..0..1..0..1..0..1..0. .0..1..0..1..0..1..0. .0..1..0..1..1..0..1
..0..0..0..0..0..0..0. .0..0..0..0..0..0..0. .0..0..0..0..0..0..0
..0..1..0..0..1..1..1. .0..1..1..0..0..0..1. .0..1..0..0..0..1..0
..0..0..0..1..1..0..1. .0..0..0..1..0..0..1. .0..0..0..1..1..1..0

Crossrefs

Cf. A317733.

Sequence in context: A305691 A317071 A316952 * A179151 A079189 A334517

Adjacent sequences: A317729 A317730 A317731 * A317733 A317734 A317735

Keyword

nonn

Author

R. H. Hardin, Aug 05 2018

Status

approved